function rConstrSearchUrl(xstr) {
 var fFound;
 var xval;
 fFound = false;
 
  for (i2=0;i2<document.forms.length;i2++){
    if (document.forms[i2].name == "SearchForm"){
      xval = document.forms[i2].txtSearchString.value;
      if (!(xval == '')){
        //alert ("xval='" + xval + "'")
		xstr = "" + xstr + "&Search=Go&txtSearchString=" + xval;    
      }
      document.forms[i2].action = xstr;
     // alert("action = '" + xstr + "'");
      document.forms[i2].submit;
      return;
    } 
  }   
  
 for (i=0;i<document.frames.length;i++){
  for (i2=0;i2<document.frames[i].document.forms.length;i2++){
    if (document.frames[i].document.forms[i2].name == "SearchForm"){
      xval = document.frames[i].document.forms[i2].txtSearchString.value;
      if (!(xval == '')){
        //alert ("xval='" + xval + "'")
		xstr = "" + xstr + "&Search=Go&txtSearchString=" + xval;    
      }
      // alert("action = '" + xstr + "'");
      document.frames[i].document.forms[i2].action = xstr;
      document.frames[i].document.forms[i2].submit;
      return;
    } 
  } 
}

  alert("Controll 'SearchForm' not found");

}